Revisiting the taxonomy of Exacum courtallense (Gentianaceae) and recognizing E. courtallense var. laxiflorum at the species rank

M.P. GEETHAKUMARY; S. DEEPU; J. KISSLING; A.G. PANDURANGAN

doi:10.11646/phytotaxa.559.2.7

Issue: Vol. 559 No. 2: 23 August 2022

Type: Article

Published: 2022-08-23

DOI: 10.11646/phytotaxa.559.2.7

Page range: 185-192

Abstract views: 30

PDF downloaded: 2

**Revisiting the taxonomy of Exacum courtallense (Gentianaceae) and recognizing E. courtallense var. laxiflorum at the species rank**

M.P. GEETHAKUMARY⁺⁻
S. DEEPU⁺⁻
J. KISSLING⁺⁻
A.G. PANDURANGAN⁺⁻

Plant Systematic and Evolutionary Science Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Karimancode P.O., Thiruvananthapuram, Kerala 695562, India

Plant Systematic and Evolutionary Science Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Karimancode P.O., Thiruvananthapuram, Kerala 695562, India; Forest Ecology Department, Kerala Forest Research Institute, Thrissur, Kerala 680653, India

Institute of biology, University of Neuchâtel, Rue Emile-Argand 11, 2000 Neuchâtel, Switzerland

Plant Systematic and Evolutionary Science Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Karimancode P.O., Thiruvananthapuram, Kerala 695562, India; Centre for Innovation in Science and Social Action, Thiruvananthapuram, Kerala 695010, India

Exacum Kerala Tamil Nadu Taxonomy Western Ghats Eudicots

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Abstract

Morphological, phenological and ecological evidences support the exclusion of Exacum courtallense var. laxiflorum Gamble (synonym: E. courtallense var. bonaccordense M. Mohanan) from E. courtallense Arn. resulting in the establishment of a new species Exacum laxiflorum (Gamble) Geethakumary, Deepu, Kissling & Pandurangan.

References

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